package com.dfbz.demo01;

import java.math.BigInteger;

/**
 * @author lscl
 * @version 1.0
 * @intro:
 */
public class Demo04_注意事项 {
    public static void main(String[] args) {


        // BigInteger不支持小数运算: java.lang.NumberFormatException: For input string: "3.14"
        BigInteger num =new BigInteger("3");

        double v = num.doubleValue();

        System.out.println(v);
    }
}
